
Golden pencilfish
A slender pencil shape with one prominent dark lateral stripe
Golden-silver colour and reddish belly or fins vary with sex and display. There is no adipose fin.
- Adult length
- Up to 6.5 cm (standard length, without the tail fin)
- Water temperature
- 21–27 °C
- pH
- 5–8
- Hardness
- 1–15 dGH
- Natural habitat
- Inhabits small rivers with little current and swamps.
Males compete; multiple males need more room and broken sightlines.
Appearance and identification
Compare the compact three-striped dwarf pencilfish, the black neon's contrasting stripe, and the spotted, head-up diptail pencilfish.
Same-species behaviour
Keep around ten or more; watch weaker individuals and feeding.
Space requirements
Allow 60–80 cm of length for eight to ten. Multiple males need more space than a 45 × 30 cm base.
Diet and feeding
Use fine dry food and small frozen or live foods.
Compatibility limits
Avoid dominant feeders; quiet surface fish can also be disturbed in small aquaria.
Aquarium environment
Use plants and floating cover to break sightlines, with gentle flow and swimming space.
Sources
www.fishbase.se ↗ 2026-10-25
www.seriouslyfish.com ↗ 2026-10-22
mczbase.mcz.harvard.edu ↗ 2026-10-22
researcharchive.calacademy.org ↗ 2026-10-22
pecescriollos.de ↗ 2026-10-22
www.aquarium-dietzenbach.de ↗ 2026-10-22
www.tfrin.gov.tw ↗ 2026-10-22
www.fishbase.org ↗ 2026-10-22
www.researchgate.net ↗ 2026-10-22
www.aquariumglaser.de ↗ 2026-10-22


